| 普通野生稻的抗水稻白叶枯病(Xanthomonas oryzae pv. oryzae)新基因Xa-23（t）的鉴定和分子标记定位 |
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| 引用本文： | 章琦,赵炳宇,赵开军,王春连,杨文才,林世成,阙更生,周永力,李道远,陈成斌,朱立煌.普通野生稻的抗水稻白叶枯病(Xanthomonas oryzae pv. oryzae)新基因Xa-23（t）的鉴定和分子标记定位[J].作物学报,2000,26(5):536-542. |
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| 作者姓名： | 章琦 赵炳宇 赵开军 王春连 杨文才 林世成 阙更生 周永力 李道远 陈成斌 朱立煌 |
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| 作者单位： | 国农业科学院作物育种栽培研究所农业部作物遗传育种重点开放实验室， 北京， 100081 |
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| 基金项目： | 国家自然科学基金，洛克菲勒基金，中国农业科学院重点项目资助 |
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| 摘 要： | 经抗谱评价、 抗性类型比较、 遣传分析鉴定出一个来自普通野生稻的抗白叶枯病新基因Xa-23（t）(暂名)。 结果表明它是迄今已知基因中抗谱最广， 抗性导入效应很强的一个完全显性的全生育期抗性基因。 用携有新基因Xa-23（t）的一对近等基因系(JG306／／Xa-23（t）)构建F2群体中选出160个单株用SSR(微卫星)标记进行基因定位
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| 关 键 词： | 普通野生稻 稻白叶枯病 新抗性基因 分子标记定位 |
| 收稿时间： | 1999-05-06 |
| 修稿时间： | 1999-12-25 |
Identifying and Mapping a New Gene Xa-23(t) for Resistance to Bacterial blight (Xanthomonas oryzae pv.oryzae) from O.rufipogon |
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| ZHANG Qi,ZHAO Bing-Yu,ZHAO Kai-Jun,WANG Chun-Lian,YANG Wen-Cai LIN Shi-Cheng,QUE Geng-Sheng,ZHOU Yong-Li,LI Dao-Yuan,CHEN Cheng-Bin,ZHU Li-Huang.Identifying and Mapping a New Gene Xa-23(t) for Resistance to Bacterial blight (Xanthomonas oryzae pv.oryzae) from O.rufipogon[J].Acta Agronomica Sinica,2000,26(5):536-542. |
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| Authors: | ZHANG Qi ZHAO Bing-Yu ZHAO Kai-Jun WANG Chun-Lian YANG Wen-Cai LIN Shi-Cheng QUE Geng-Sheng ZHOU Yong-Li LI Dao-Yuan CHEN Cheng-Bin ZHU Li-Huang |
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| Institution: | Institute of Crop Breeding and Cultivation Key Laboratory of Crop Genetic & Breeding, Ministry of Agriculture, CAAS, Beijing, 100081 |
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| Abstract: | A new resistance gene to bacterial blight of Xa-23(t)from O.rufipogon was identified based on the resistance spectrum evaluated,comparison of resistance type,inheritance analysis and testing the allelism relationship between Xa-23(t) and Xa-21.The results indicated that it is conditioned by a new complete dominance overall resistance gene with the widest spectrum resistance,and highest efficiency of resistance transfer among all the known genes identified so far.One hundred and sixty plants were selected from the F2 population derived from a pair of Near-isogenic line (JG30*6//Xa-23(t)) for mapping the gene by using 160 SSR markers. The resistance gene was located on rice chromosome 11 (5.3cM to OSR06,27.7cM to RM244). |
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| Keywords: | O rufipogon Bacterial blight New resistance gene Molecular mapping |
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